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Round tubular stapler for surgical use

A binding instrument and surgical technology, applied in the field of medical devices, can solve the problems of clamping tissue, bending of the screw rod, complex assembly, etc., and achieve the effects of easy manufacturing and assembly, preventing secondary firing, and improving performance

Inactive Publication Date: 2006-06-14
TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is found in actual use that this safety device has the following defects: if the doctor is not experienced enough, the safety device can also be opened when the stapling gap is not in place and the surgical stapling operation is performed, resulting in poor surgical results; or, when the head assembly of the stapling instrument is replaced If you forget to close the safety during operation, the firing wrench will be pressed if you are not careful, and the staple will be shot out from the head assembly of the instrument, resulting in the failure of the operation.
[0003] In terms of anti-secondary firing, Chinese patent 98121969 uses a spring to automatically return the safety button to prevent re-firing. The disadvantage is that the spring is located outside the body and there is a danger of pinching the tissue, and the safety button is also against the screw rod, which is easy Bend the screw
Chinese patent 99229088 proposes an automatic safety device, which has many parts and complex assembly, and it is difficult to reset after opening the safety; Chinese patent 99227301 puts the safety rod against the screw rod to play the role of automatic safety protection, and this structure is easy to bend the screw rod

Method used

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  • Round tubular stapler for surgical use
  • Round tubular stapler for surgical use
  • Round tubular stapler for surgical use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Such as Figure 1~Figure 14 As shown, the stapler of the present invention includes a stapler body, a binding head, a firing mechanism, and a transmission adjustment mechanism: the firing mechanism includes a handle 1 and a handle housing 2. The handle 1 is fixedly connected to the handle housing 2, and is pivotally connected to the stapler body The transmission adjustment mechanism includes a screw rod 4 and an adjustment knob 6, the front end of the screw rod 4 is connected with the nail anvil pull rod, and the rear end is connected with the adjustment knob 6 in a threaded manner. Similar to the prior art, a return spring is arranged between the handle 1 and the stapler body, so that the handle 1 always tends to be opened before the instrument is used.

[0053] In a technical solution of the present invention, the handle housing 2 is provided with a stopper 8, such as Figure 7 , Figure 8 Shown. In addition, a bumper 3 and a pull tab 5 are provided. One end of the bumper...

Embodiment 2

[0060] Figure 15a In the case, a hole 65 is provided in the housing 61, a hole is opened on the push rod 62, a pin 63 is placed in the hole, and the tail of the pin 63 is equipped with a spring 64; Figure 15b In the case, a boss 66 is provided inside the housing 61, a hole is opened on the push rod 62, a pin 63 is placed in the hole, and a spring 64 is installed at the tail of the pin 63; Figure 15c In the case, the housing 61 has a hole, a convex piece 67 is placed in the hole, a spring 68 is installed at the tail of the convex piece 67, and a boss 69 is arranged on the push rod 62; Figure 15d In the case, the shell 61 has a hole, and a spring sheet 70 is placed inside. A screw 71 passes through the hole to lock one end of the spring sheet 70 on the shell. At the same time, a boss 72 is provided on the push rod 62.

[0061] In this way, when the stapler is in use, the push rod moves forward, and the push rod is jammed and cannot be reset due to the cooperation of the boss, t...

Embodiment 3

[0063] Figure 16a , 16b 16c shows another embodiment of the present invention: the push rod 22 is covered with a sleeve 23, the push rod 22 is provided with a through hole, and the through hole is equipped with two pins 24a, 24b, one of the two pins There is a compression spring 25 in between. The inner wall of the housing 21 is provided with a reducing step. The smallest inner diameter of the reducing step is in an interference fit with the outer diameter of the sleeve 23, and a number of hooks are provided on one side of the reducing step 26. In the initial state, the outer ends of the pins 24a and 24b abut against the inner wall of the sleeve 23, such as Figure 16a As shown; when the instrument is fired, the push rod 22 moves forward with the sleeve 23. After the firing is completed, the sleeve 23 is caught by the hook 26, and the pins 24a and 24b are ejected under the action of the spring 25 and abut against the housing 21 protruding parts, such as Figure 16b As shown; whe...

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Abstract

A tubular binding apparatus for surgical operation features its additional mechanism for preventing the secondary triggering in order to improve its usability greatly. Said additional mechanism may be the improved structure of safety rod and pull plate and additionall use of convex block and stop block in its handle, or the coordinate mechanism between the pin driving rod and casing, safety bolt and fixing rod, or additional use of creased ring in the pin cabin.

Description

Technical field [0001] The invention relates to a binding instrument used in surgical operations, in particular a round tube type binding instrument, particularly a round tube type binding instrument provided with a secondary firing prevention mechanism, belonging to the technical field of medical equipment. Background technique [0002] Surgical stapler is a medical device that is often used in surgical operations on physiological tissues such as intestines. The difference in the performance of the device plays a vital role in the overall effect of the operation. In order to prevent accidental firing, a safety device is generally provided on the binding instrument. In the prior art, the operating mode of the safety device on the tube-type binding instrument is mostly manual. When the doctor performs an operation on the patient, the safety is opened and the firing binding is implemented after the completion of various preparations. In actual use, it has been found that this safet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/03A61B17/068
Inventor 陈望东林江印卫忠陆明耀罗泉松
Owner TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE CO LTD
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